EXCLUSIVE: Justin Theroux Dishes on the Benefits of His Secret Wedding to Jennifer Aniston

ET's Cameron Mathison caught up with the 45-year-old actor at CinemaCon 2017 in Las Vegas, Nevada, on Tuesday, and he praised his LEGO NINJAGO Movie co-star, Dave Franco, for choosing to marry actress Alison Brie in a private ceremony. "I just found out about that, I didn't know that that had happened," his says of Franco's nuptials. "Congrats to him, good for him for making it private."

Theroux also recalls why his own secret wedding was so great. "It's so much more special when it's just your closest friends and family and it's lovely," he explains. "[Aniston and I] wanted it to be a peaceful environment, you don't want it to be hectic."

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As for The LEGO NINJAGO Movie, Theoroux admits that he's excited to play warlord Garmadon. "I get to play the bad guy again which is nice," he shares. "It's bad-guy light because it's for kids but still a bad guy. You get to have the fun of the bad guy. Completely narcissistic, thin skinned, angry, wanting to take over Ninjago for no reason."

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Another perk of the animated role is that he could wear whatever he wanted to work. "I show up at work usually wearing something black which is what my character does," Theroux notes. "[Garmadon] shows up at work wearing black."